Anyone ever run into a property line dispute like this?

[Aidan Mulligan]

Would you look at that. There is a road going right through the backyard (or front yard?) of the house I'm interested in buying. Dotted outline property.

The realtor explained that it used to be a dirt road that the trash man would drive down and pick up. Everyone started using it as a driveway and would park on it so now it is paved and maintained by the town. 

So my question, is there anything I can do about it? What would you do about it?